CN216266459U - Cutting die for die cutting small holes - Google Patents
Cutting die for die cutting small holes Download PDFInfo
- Publication number
- CN216266459U CN216266459U CN202122610128.8U CN202122610128U CN216266459U CN 216266459 U CN216266459 U CN 216266459U CN 202122610128 U CN202122610128 U CN 202122610128U CN 216266459 U CN216266459 U CN 216266459U
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- China
- Prior art keywords
- die
- cutting
- mounting plate
- mounting panel
- ejector pin
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- Expired - Fee Related
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- 238000005520 cutting process Methods 0.000 title claims abstract description 108
- 229920001971 elastomer Polymers 0.000 claims description 27
- 239000000463 material Substances 0.000 claims description 18
- 230000037303 wrinkles Effects 0.000 abstract description 7
- 239000003292 glue Substances 0.000 abstract 2
- 229920000800 acrylic rubber Polymers 0.000 description 2
- 229920000058 polyacrylate Polymers 0.000 description 2
- 239000004814 polyurethane Substances 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
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Abstract
The utility model provides a cutting die for die cutting small holes, which comprises: the fixed plate, the mounting panel, thimble and excellent power glue piece, the mounting panel is fixed on the fixed plate, the standing groove has been seted up to one side that is close to the mounting panel on the fixed plate, one side of keeping away from the fixed plate on the mounting panel is equipped with convex cutting edge of circle form, the thimble includes ejector pin and head, the head sets up in the standing groove, be used for following the movably string of first direction with the ejector pin and establishing in the mounting panel, the ejector pin sets up at the cutting edge inner circle, the ejector pin is the protrusion form on the mounting panel before the cross cutting, and the protrusion height of ejector pin is not less than the protrusion height of cutting edge on the mounting panel, the ejector pin is pressed back gradually in the mounting panel when the cross cutting, until keeping the parallel and level with the mounting panel, excellent power glue piece sets up in the standing groove and pushes up and establishes between the head of fixed plate and thimble. The utility model can well prevent the inner ring of the cutting die from being pressed by the thimble when the small hole is cut by the die, thereby being not easy to deform or wrinkle, and greatly improving the precision and quality of the product.
Description
Technical Field
The utility model belongs to the technical field of cutting dies, and particularly relates to a cutting die for die cutting small holes.
Background
When die cutting is carried out, the cutting die is fixed on the upper die table, the processing material is placed under the cutting die, the upper die table moves up and down, and one die cutting operation is formed after the upper die table and the lower die table are pressed together. Many products are widely used because they allow the material to be quickly formed into a particular shape and size with the aid of a cutting die.
However, when the small holes are die-cut on the harder or thinner material, the material in the inner ring area of the small holes is easy to deform or wrinkle, so that the die-cutting quality is affected, and therefore, how to prevent the material in the inner ring of the small holes from deforming or wrinkling during the die-cutting of the small holes is very important.
SUMMERY OF THE UTILITY MODEL
Aiming at the technical problem, the utility model provides a cutting die for die cutting small holes, which aims to solve the problem that the inner ring material of the small holes is easy to deform or wrinkle when the small holes are die-cut.
In order to achieve the purpose, the utility model adopts the following technical scheme:
a die for die cutting apertures, comprising: the die cutting device comprises a fixed plate, a mounting plate, a thimble and a high-strength rubber block, wherein the mounting plate is fixed on the fixed plate, one side of the fixed plate, which is close to the mounting plate, is provided with a placing groove, one side of the mounting plate, which is far away from the fixed plate, is provided with a cutting edge, the cutting edge is in a ring shape and protrudes out of the surface of the mounting plate and is used for die-cutting a small hole on a product, the mounting plate is also provided with a mounting hole, the mounting hole is a through hole and is positioned in an inner ring of the cutting edge, the thimble comprises a mandril and a head, the mandril is movably inserted into the mounting hole along a first direction, the head is arranged in the placing groove and is used for hanging the mandril on the mounting plate, the high-strength rubber block is arranged in the placing groove and is arranged between the head of the fixed plate and the thimble, one end of the mandril of the thimble protrudes out of the mounting plate before die-cutting, the protrusion height of the mandril on the mounting plate is not lower than that of the cutting edge, the mounting plate is gradually pressed back into the mounting plate until the mounting plate is parallel and level with the mounting plate during die-cutting, during the period, the head of the thimble gradually compresses the high-strength rubber block.
Optionally, the cross-sectional profile of the ejector pin is just as large as the cross-sectional profile of the inner ring of the cutting edge.
Optionally, the cutting edge and the ejector pins are in one-to-one correspondence, the high-strength rubber block is a plate, and the cross section profile range perpendicular to the first direction covers all the ejector pins.
Preferably, the cross-sectional shapes of the placing groove and the high-strength rubber block in the direction perpendicular to the first direction are similar, and a gap is formed between the side wall of the high-strength rubber block and the side wall of the placing groove.
Preferably, the gap width everywhere of the high-strength rubber block and the placing groove is equal.
Optionally, the height of the protrusion of the ejector rod on the mounting plate is higher than the height of the protrusion of the blade on the mounting plate before die cutting.
Optionally, the die-cutting device further comprises a positioning pin, wherein the positioning pin is arranged on the mounting plate and on the same side with the cutting edge, and is used for die-closing and positioning of the cutting die during die-cutting.
Preferably, the height of the protrusion of the positioning pin on the mounting plate is higher than that of the protrusion of the ejector rod before die cutting.
Alternatively, the mounting plate is detachably fixed to the fixing plate by a plurality of bolts.
Preferably, the head of each bolt is arranged in the mounting plate, and the head of each bolt is not higher than the mounting plate.
Compared with the prior art, the cutting die for the small die-cutting holes is provided with the ejector pins and the high-elasticity rubber block, so that the ejector pins are pressed by the inner rings of the cutting die and are not easy to deform or wrinkle when the small die-cutting holes are formed, the ejector pins can be pressed back into the mounting plate along with the die-cutting, the die-cutting work is not influenced, the phenomenon that the inner ring material of the cutting die is easy to deform or wrinkle when the small die-cutting holes are formed is well prevented, the processing precision of products is greatly improved, and the quality of the products is improved.
Drawings
FIG. 1 is a schematic view of a cutting die for cutting small holes according to an embodiment of the present invention;
fig. 2 is a schematic structural view of a cutting die for die cutting small holes at another viewing angle according to an embodiment of the present invention.
Detailed Description
In order to further understand the objects, structures, features and functions of the present invention, the following embodiments are described in detail.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
Referring to fig. 1 and 2, a cutting die 100 for die cutting small holes includes: fixed plate 1, mounting panel 2, thimble 3 and excellent power rubber block 4. The mounting panel 2 is fixed on the fixed plate 1, and a placing groove 11 is arranged on one side of the fixed plate 1 close to the mounting panel 2.
One side of keeping away from the fixed plate on the mounting panel 2 is equipped with cutting edge 21, and cutting edge 21 is the surface of circle form and protrusion in mounting panel 2 for go up the die-cut aperture on the product, still seted up mounting hole 22 on mounting panel 2, mounting hole 22 is the through-hole, is located the cutting edge 21 inner circle. The die cutting is performed by pressing the blade 21 down on the material, and the blade 21 cuts a hole in the material under the pressure.
The thimble 3 includes a head portion 31 and a push rod 32, the push rod 32 is movably inserted in the mounting hole 22 along the first direction X, the head portion 31 is disposed in the placing groove 11 for hanging the push rod 32 on the mounting plate 2.
The high-strength rubber block 4 is arranged in the placing groove 11 and is propped between the fixing plate 1 and the head part of the thimble 3. The ejector rod 32 can not only flatten the material of the inner ring of the cutting edge 21 tightly, but also reserve space for the ejector rod 32 to be pressed back into the mounting plate 2. For harder or thinner materials, the amount of deformation is generally smaller and the spring force is not sufficient. The high-strength rubber adopted here, also called polyurethane PU elastomer, is a novel material with good strength and small compression deformation, the same deformation amount can provide larger and more stable elasticity than a spring, and the high-strength rubber has simple structure and low cost.
Before die cutting, one end of the ejector rod 32 of the ejector pin 3 protrudes out of the mounting plate 2, the protruding height of the ejector rod 32 is not lower than the protruding height of the blade 21 on the mounting plate 2, the ejector rod 32 is gradually pressed back into the mounting plate 2 during die cutting until the ejector rod is flush with the mounting plate 2, and the head 31 of the ejector pin 3 gradually compresses the high-strength rubber block 4 to leave a space for the ejector rod 32.
Alternatively, the mandrel 32 has a cross-sectional profile that is just as large as the inner ring cross-sectional profile of the blade 21. The gap between the side wall of the ejector rod 32 and the inner wall of the cutting edge 21 is extremely small, the inner ring of the cutting edge 21 is basically filled, the ejector rod 32 and the cutting edge 21 with the corresponding profiles are arranged, the material of the inner ring of the cutting edge 21 can be prevented from wrinkling to the maximum extent, and the method is suitable for products with high machining precision requirements.
Optionally, the blades 21 and the thimbles 3 are provided with a plurality of one-to-one correspondence, and the high-strength rubber blocks 4 are plates, and the cross-sectional profile of each plate perpendicular to the first direction X covers all the thimbles 3. The plate-shaped high-strength rubber block 4 is more convenient to cut according to the arrangement condition of the cutting edge 21.
Preferably, the cross-sectional shapes of the placing groove 11 and the high-strength rubber block 4 in the vertical first direction are similar, and a gap is formed between the side wall of the high-strength rubber block 4 and the side wall of the placing groove 11. Thus, the high-strength rubber block 4 can be ensured to have a deformation space. Preferably, the width of the gap is equal everywhere. Therefore, the same deformation space can be better ensured in all lateral directions, and more balanced and stable elasticity is generated.
Optionally, the height of the protrusion of the ejector pin 32 on the mounting plate 2 before die cutting is higher than the height of the protrusion of the blade 21 on the mounting plate 2. Therefore, the pressing and the cutting can be carried out firstly, and the flatness of the material of the inner ring of the cutting edge 21 during the die cutting can be better ensured.
Optionally, the cutting die 100 further includes a positioning pin 6, and the positioning pin 6 is disposed on the mounting plate 2 and on the same side as the blade 21, and is used for mold closing and positioning of the cutting die 100 during die cutting. The positioning is accurate, and the precision of the small hole die cutting is higher. In particular, the height of the protrusion of the positioning pin 6 on the mounting plate 2 is higher than the height of the protrusion of the ejector pin 32 before die cutting. This protects the blade 21 well.
Alternatively, the mounting plate 2 is detachably fixed to the fixing plate 1 by a plurality of bolts 5. The device is convenient to disassemble and maintain.
Preferably, the head of each bolt 5 is disposed within the mounting plate 2, and the head of each bolt 5 is not higher than the mounting plate 2. This arrangement does not easily damage blade 21 and does not affect die cutting.
The working principle of one embodiment of the utility model is as follows:
before die cutting, the head 31 is under the action of the fixing plate 1 and the acrylic rubber block 4, so that the ejector rod 32 protrudes out of the processing surface of the mounting plate 2, and the protruding height of the ejector rod 32 is greater than that of the blade 21, when the cutting die 100 starts to perform die cutting along the first direction X, the ejector rod 32 is gradually pressed back into the mounting hole 22 of the mounting plate 2, meanwhile, the acrylic rubber block 4 is compressed, the side surface expands to leave a space for the ejector rod 32, when the blade 21 contacts with a material, cutting is started, and the material of the inner ring of the blade 21 is kept in a flat state due to the pressure of the ejector rod 32 in the cutting process.
According to the cutting die for the small die-cutting hole, the ejector pins and the high-elasticity rubber block are arranged, so that the inner ring of the cutting die is pressed by the ejector pins and is not easy to deform or wrinkle when the small die-cutting hole is formed, the ejector pins can be pressed back into the mounting plate along with the die-cutting, the die-cutting work is not influenced, the phenomenon that the inner ring material of the cutting die is easy to deform or wrinkle when the small die-cutting hole is formed is well prevented, the processing precision of a product is greatly improved, and the product quality is improved.
The present invention has been described in relation to the above embodiments, which are only exemplary of the implementation of the present invention. It should be noted that the disclosed embodiments do not limit the scope of the utility model. Rather, it is intended that all such modifications and variations be included within the spirit and scope of this invention.
Claims (10)
1. A die for die cutting apertures, comprising: the fixing plate, the mounting plate, the thimble and the high-strength rubber block;
the mounting plate is fixed on the fixing plate, and a placing groove is formed in one side, close to the mounting plate, of the fixing plate;
a cutting edge is arranged on one side of the mounting plate, which is far away from the fixing plate, the cutting edge is in a ring shape and protrudes out of the surface of the mounting plate, and is used for die-cutting a small hole on a product;
the thimble comprises a mandril and a head part, the mandril is movably inserted into the mounting hole along a first direction, and the head part is arranged in the placing groove and used for hanging the mandril on the mounting plate;
the high-strength rubber block is arranged in the placing groove and is propped between the fixing plate and the head part of the thimble;
before die cutting, one end of the ejector rod of the ejector pin protrudes out of the mounting plate, the protruding height of the ejector rod is not lower than the protruding height of the cutting edge on the mounting plate, the ejector rod is gradually pressed back into the mounting plate during die cutting until the ejector rod is flush with the mounting plate, and the head of the ejector pin gradually compresses the high-strength rubber block.
2. The die for die cutting apertures as claimed in claim 1, wherein the cross-sectional profile of the ejector pin is sized to be just as large as the cross-sectional profile of the inner ring of the cutting edge.
3. The die set according to claim 1, wherein the plurality of cutting blades and the plurality of ejector pins are in one-to-one correspondence, and the high-strength rubber block is a plate material whose cross-sectional profile perpendicular to the first direction covers all the ejector pins.
4. The die cutter according to claim 3, wherein the placement groove and the high-strength rubber block have similar cross-sectional shapes perpendicular to the first direction, and a gap is formed between the sidewall of the high-strength rubber block and the sidewall of the placement groove.
5. The die for die cutting apertures as claimed in claim 4, wherein the gap width of the high-strength rubber block and the placing groove is equal everywhere.
6. The die for die cutting apertures of claim 1, wherein the ejector pin has a higher protrusion height on the mounting plate than the blade has on the mounting plate before die cutting.
7. The die for die cutting apertures as claimed in claim 1, further comprising a positioning pin disposed on the same side of the mounting plate as the blade for clamping and positioning the die during die cutting.
8. The die for die cutting apertures as claimed in claim 7, wherein the protrusion height of the positioning pin on the mounting plate is higher than the protrusion height of the ejector pin before die cutting.
9. The die for die cutting apertures as claimed in claim 1, wherein the mounting plate is detachably secured to the fixing plate by a plurality of bolts.
10. The die cutter of claim 9, wherein the head of each bolt is disposed within the mounting plate and the head of each bolt is not elevated above the mounting plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122610128.8U CN216266459U (en) | 2021-10-28 | 2021-10-28 | Cutting die for die cutting small holes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122610128.8U CN216266459U (en) | 2021-10-28 | 2021-10-28 | Cutting die for die cutting small holes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216266459U true CN216266459U (en) | 2022-04-12 |
Family
ID=81073172
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122610128.8U Expired - Fee Related CN216266459U (en) | 2021-10-28 | 2021-10-28 | Cutting die for die cutting small holes |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216266459U (en) |
-
2021
- 2021-10-28 CN CN202122610128.8U patent/CN216266459U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220412 |
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| CF01 | Termination of patent right due to non-payment of annual fee |